4399563 has 18 divisors (see below), whose sum is σ = 6863484. Its totient is φ = 2499504.

The previous prime is 4399553. The next prime is 4399573. The reversal of 4399563 is 3659934.

It is an interprime number because it is at equal distance from previous prime (4399553) and next prime (4399573).

It is not a de Polignac number, because 4399563 - 2⁵ = 4399531 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (4399513) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25345 + ... + 25517.

Almost surely, 2^4399563 is an apocalyptic number.

4399563 is a deficient number, since it is larger than the sum of its proper divisors (2463921).

4399563 is an equidigital number, since it uses as much as digits as its factorization.

4399563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 183 counting only the distinct ones).

The product of its digits is 87480, while the sum is 39.

The square root of 4399563 is about 2097.5135279659. The cubic root of 4399563 is about 163.8588290406.

The spelling of 4399563 in words is "four million, three hundred ninety-nine thousand, five hundred sixty-three".